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3 years ago

Help identify the mapping diagram.

Mathematics

2 answers:

marshall27 [118]3 years ago

7 0

Save Wildlife - Save Nature

egoroff_w [7]3 years ago

3 0

1. A, it is a function

2. A, it is not a function

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8-2b=-2(b=-3;b=0;b=5)

lions [1.4K]

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3 years ago

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faltersainse [42]

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Step-by-step explanation:

Let,

Price of one vegetarian special lunch = x

Price of one chicken special lunch = y

According to given statement;

21x+40y=467 Eqn 1

28x+36y=484 Eqn 2

Multiplying Eqn 1 by 28

$28(21x+40y=467)\\588x+1120y=13076\ \ \ Eqn\ 3$

Multiplying Eqn 2 by 21

$21(28x+36y=484)\\588x+756y=10164\ \ \ Eqn\ 4$

Subtracting Eqn 4 from Eqn 3

$(588x+1120y)-(588x+756y)=13076-10164\\588x+1120y-588x-756y=2912\\364y=2912$

Dividing both sides by 364

$\frac{364y}{364}=\frac{2912}{364}\\y=8$

Putting y=8 in Eqn 1

$21x+40(8)=467\\21x+320=467\\21x=467-320\\21x=147$

Dividing both sides by 21

$\frac{21x}{21}=\frac{147}{21}\\x=7$

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

3 years ago

Find the volume of the rectangular prism. geometry hw plz help

liq [111]

Answer:

189 cm^3

Step-by-step explanation:

7 times 9 times 3=189

4 0

3 years ago

Connor bought a pack of 4 notebooks for<br> $8.20. What was the unit price? please explain

Mamont248 [21]

Answer:

$2.05

Step-by-step explanation:

$8/4 notebooks= $2

.20/4=.05

________________

$2.05

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3 years ago

Calculate the speed of a train traveled 400miles in 5 hours

slavikrds [6]

Answer:

80 miles per an hour

Step-by-step explanation:

400 divided by 5 equals= 80 so 80miles = 1 hour

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3 years ago

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